Eco-Friendly Guide to Paris, London and Stockholm

Already famous for its legendary jazz club, Le Méridien Étoile *** (doubles from $420) is now getting attention for installing energy-efficient mini-bars, televisions, and heating systems in its polished rooms.

If you are willing to sacrifice a central location for a great value, the business-oriented Ibis Porte de Clichy Centre *** (Doubles from $140), just outside the city and still served by the Métro, has more than 800 square feet of solar panels stretched across its façade.